Watchstander turns open maritime signals into a live watch floor: it renders who is at sea in real time and flags the behaviour that matters — at-sea rendezvous, identity spoofing, dark runs, loitering near critical infrastructure — then corroborates each flag against satellite radar and the live sanctions list. No paid AIS. No classified feeds. Nothing to breach.
Naive AIS detection floods with false alarms. Watchstander's value is the layer on top: ranking, corroboration, and a plain-language reason for every flag.
Real-time AIS streaming now, pointed at any region on Earth — plus a day-tiled historical archive for back-analysis. Same detectors run on both.
Rendezvous, AIS spoofing / identity hops, loitering, and going-dark — each carrying a calibrated HIGH / MED / LOW confidence and the exact reasons behind it.
Satellite radar (Sentinel-1 dark-vessel detections), live OFAC sanctions screening, and proximity to subsea cables, pipelines and platforms — agreement raises confidence.
Click any vessel for a dossier, pin a watchlist, export the window to CSV, or send a colleague a link that reopens the exact finding. Nothing to install.
NOAA AIS, aisstream real-time, Global Fishing Watch, Sentinel-1 radar, the U.S. Treasury OFAC list. Nothing licensed, nothing classified — so it deploys anywhere, and there's no feed to lose.
Not a black box. Each detection shows its confidence and the signals behind it — a genuine stop vs. a lane pass, a radar corroboration, a sanctions match. A screening lead, never dressed up as proof.
Every AIS identity is checked against the U.S. Treasury OFAC SDN maritime designations — 1,500+ vessels, from a snapshot of the published list — so an anomaly can become a sanctioned vessel going dark.
From 12 months of NOAA AIS over the U.S. Southeast & Caribbean (all of 2024) — all figures derived from public data, reproducible in the live app.
Numbers reflect one historical window and move with the data. The live feed is current to the minute; NOAA's bulk archive lags by design.
Open the watch floor, point it at any region on Earth, and watch real vessels report. No login, no install.